the main steam pressure in the boiler shown in figure 1 needs to be maintained less than 1.013 bar and the temperature inside th

Aug 25, 2015· The 30 bar boiler needs more heat input than the 10 bar boiler . Therefore bigger fire and greater heating surfaces . Also as pressure gets higher so does the steam temperature so better materials become necessary for construction .

Sep 28, 2016· If you have a boiler set at 7 psi, the steam temperature is about 232 ° F. Steam traps will open once the steam temperature drops 10 ° to 20 °. The discharge temperature of the trap will be between 212 ° and 222 ° into a pipe at atmospheric pressure.

Sep 12, 2017· Steam Boiler Quiz 3 . Steam Boiler Quiz Steam Boiler Quiz . Steam Boiler Quiz 2 Steam Boiler Quiz 2 . Featured Quizzes. Gallons of water required to produce a given amount of steam at a given pressure and temperature. 29. Welded longitudinal joints are stronger than …

Steam Production From steam tables we can see that the total heat of steam does not vary a great deal as the boiler pressure increase The boiling point (b.p.) increases as the pressure increases Thus the sensible heat increases as the pressure increases, and the latent heat decreases Boiler pressures are expressed in psia, psig, bar, kg/cm2

In the case of industrial process contamination, it is possible for organic contaminants to decompose under boiler temperature and pressure to form organic acids. Sugar is an excellent example of an organic which, when returned in a large quantity, can cause rapid loss of boiler water alkalinity and reduce pH of the boiler water to 4.3 and lower.

in case of an explosion or other event rendering a boiler or pressure vessel unsafe to return to operation, notice shall be given immediatly to the code official. no boiler unfired pressure vessel nor any parts shall be removed or disturbed before an inspection is made by a …

The free-blowing drain between the boiler's automatic nonreturn valve and the main steam stop valve should be ___ the boiler is cut in on the line. slightly lower than When cutting a boiler in on a line equipped with two hand-operated steam stop valves, the pressure on …

Where an external expansion vessel is fitted, and the cold boiler pressure is 1 bar, you may see a rapid rise in boiler pressure as the system heats up. This is because, with a pre-charge pressure of 1½ bar, the expansion pocket in the external vessel is only available once the boiler pressure reaches 1½ bar.

2)Compute the cross-section areas (m2) of pipe 1 and pipe 2, a1 and a2, if the flow rates of both pipes are balanced and maintained to be equal, as shown in Figure 1.3. 3)Compute the mass flow rate of the steam across a radiator in kg/s that is required to heat the room with a heating rate of 3 kW. The temperature change of the steam across the

EXAMPLE 10–3 Effect of Boiler Pressure and Temperature on Efficiency A steam power plant operates on the cycle shown in Fig. 10–5. If the isentropic efficiency of the turbine is 87 percent and the isentropic efficiency of the pump is 85 percent, determine (a) the thermal efficiency of the cycle and (b) the net

Requirements of an efficient boiler 1. The boiler should generate maximum amount of steam at a required pressure and temperature and quality with minimum fuel consumption and expenses 2. Steam production rate should be as per requirements 3. It should be absolutely reliable 4. It should be light in weight 5. It should not occupy large space.